Characteristics of Oxidation and Oxygen Penetration of Alloy 690 in 600 °C Aerated Supercritical Water

Xiangyu Zhong; Xinqiang Wu; En Hou Han

doi:10.1016/j.jmst.2016.11.001

Characteristics of Oxidation and Oxygen Penetration of Alloy 690 in 600 °C Aerated Supercritical Water

Xiangyu Zhong, Xinqiang Wu, En Hou Han

Research output: Contribution to journal › Article › peer-review

20 Citations (Scopus)

Abstract

The oxide films formed on Alloy 690 exposed to 600 °C supercritical water were characterized using mass measurement, X-ray diffraction, Raman spectroscopy, scanning electron microscopy equipped with energy dispersive X-ray spectroscopy and X-ray photoelectron spectroscopy. It was found that the mass gain of the alloy in supercritical water decreased with increasing exposure time. The oxide films have a double-layer structure, with an inner layer rich in Cr and outer layer rich in Ni and Fe after short time and long time exposure. The penetration of the oxide along the grain boundaries was observed, and the penetration depth increased with increasing exposure time. The grain boundaries and voids are the short-path of oxygen diffusion into the metal.

Original language	English
Pages (from-to)	561-569
Number of pages	9
Journal	Journal of Materials Science and Technology
Volume	34
Issue number	3
DOIs	https://doi.org/10.1016/j.jmst.2016.11.001
Publication status	Published - 2018 Mar
Externally published	Yes

Keywords

High temperature corrosion
High temperature oxidation
Ni-based alloy
Oxide film
Supercritical water
XPS

ASJC Scopus subject areas

Ceramics and Composites
Mechanics of Materials
Mechanical Engineering
Polymers and Plastics
Metals and Alloys
Materials Chemistry

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10.1016/j.jmst.2016.11.001

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title = "Characteristics of Oxidation and Oxygen Penetration of Alloy 690 in 600 °C Aerated Supercritical Water",

abstract = "The oxide films formed on Alloy 690 exposed to 600 °C supercritical water were characterized using mass measurement, X-ray diffraction, Raman spectroscopy, scanning electron microscopy equipped with energy dispersive X-ray spectroscopy and X-ray photoelectron spectroscopy. It was found that the mass gain of the alloy in supercritical water decreased with increasing exposure time. The oxide films have a double-layer structure, with an inner layer rich in Cr and outer layer rich in Ni and Fe after short time and long time exposure. The penetration of the oxide along the grain boundaries was observed, and the penetration depth increased with increasing exposure time. The grain boundaries and voids are the short-path of oxygen diffusion into the metal.",

keywords = "High temperature corrosion, High temperature oxidation, Ni-based alloy, Oxide film, Supercritical water, XPS",

author = "Xiangyu Zhong and Xinqiang Wu and Han, {En Hou}",

note = "Funding Information: This study was jointly supported by the Science and Technology Foundation of China (No. 51671201 and No. 51371174), the Science and Technology Project of Yunnan Province, the Technology Development (Cooperation) Fund from Yunnan Wenshan Dounan Manganese Industry Co., Ltd. and the Innovation Fund of Institute of Metal Research (IMR), Chinese Academy of Sciences (CAS). Funding Information: This study was jointly supported by the Science and Technology Foundation of China (No. 51671201 and No. 51371174 ), the Science and Technology Project of Yunnan Province , the Technology Development (Cooperation) Fund from Yunnan Wenshan Dounan Manganese Industry Co., Ltd. and the Innovation Fund of Institute of Metal Research (IMR), Chinese Academy of Sciences (CAS). Publisher Copyright: {\textcopyright} 2016",

year = "2018",

month = mar,

doi = "10.1016/j.jmst.2016.11.001",

language = "English",

volume = "34",

pages = "561--569",

journal = "Journal of Materials Science and Technology",

issn = "1005-0302",

publisher = "Chinese Society of Metals",

number = "3",

}

TY - JOUR

T1 - Characteristics of Oxidation and Oxygen Penetration of Alloy 690 in 600 °C Aerated Supercritical Water

AU - Zhong, Xiangyu

AU - Wu, Xinqiang

AU - Han, En Hou

N1 - Funding Information: This study was jointly supported by the Science and Technology Foundation of China (No. 51671201 and No. 51371174), the Science and Technology Project of Yunnan Province, the Technology Development (Cooperation) Fund from Yunnan Wenshan Dounan Manganese Industry Co., Ltd. and the Innovation Fund of Institute of Metal Research (IMR), Chinese Academy of Sciences (CAS). Funding Information: This study was jointly supported by the Science and Technology Foundation of China (No. 51671201 and No. 51371174 ), the Science and Technology Project of Yunnan Province , the Technology Development (Cooperation) Fund from Yunnan Wenshan Dounan Manganese Industry Co., Ltd. and the Innovation Fund of Institute of Metal Research (IMR), Chinese Academy of Sciences (CAS). Publisher Copyright: © 2016

PY - 2018/3

Y1 - 2018/3

N2 - The oxide films formed on Alloy 690 exposed to 600 °C supercritical water were characterized using mass measurement, X-ray diffraction, Raman spectroscopy, scanning electron microscopy equipped with energy dispersive X-ray spectroscopy and X-ray photoelectron spectroscopy. It was found that the mass gain of the alloy in supercritical water decreased with increasing exposure time. The oxide films have a double-layer structure, with an inner layer rich in Cr and outer layer rich in Ni and Fe after short time and long time exposure. The penetration of the oxide along the grain boundaries was observed, and the penetration depth increased with increasing exposure time. The grain boundaries and voids are the short-path of oxygen diffusion into the metal.

AB - The oxide films formed on Alloy 690 exposed to 600 °C supercritical water were characterized using mass measurement, X-ray diffraction, Raman spectroscopy, scanning electron microscopy equipped with energy dispersive X-ray spectroscopy and X-ray photoelectron spectroscopy. It was found that the mass gain of the alloy in supercritical water decreased with increasing exposure time. The oxide films have a double-layer structure, with an inner layer rich in Cr and outer layer rich in Ni and Fe after short time and long time exposure. The penetration of the oxide along the grain boundaries was observed, and the penetration depth increased with increasing exposure time. The grain boundaries and voids are the short-path of oxygen diffusion into the metal.

KW - High temperature corrosion

KW - High temperature oxidation

KW - Ni-based alloy

KW - Oxide film

KW - Supercritical water

KW - XPS

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Characteristics of Oxidation and Oxygen Penetration of Alloy 690 in 600 °C Aerated Supercritical Water

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Keywords

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